报道了低压下碱金属碳酸盐催化环氧化物、CO2和甲醇一步合成碳酸二甲酯(DMC)的方法,系统考察了反应条件对一步合成DMC的影响规律.在最优反应条件下(初始压力0.5 MPa,反应温度120°C,碳酸钠7.5 mol%),以环氧乙烷为起始剂的DMC收率达到63.5%.提出了碱金属碳酸盐催化一步法合成DMC的可能反应机理.
A mild and efficient protocol for the alkali carbonate-catalyzed one-pot synthesis of dimethyl car-bonate (DMC) from epoxide, CO2 and methanol was developed. The reaction conditions for the one-pot synthesis of DMC were investigated. Under the optimized conditions of initial pressure 0.5 MPa, 120 °C and catalyst loading of 7.5 mol%, 63.5% yield of DMC was achieved using ethylene oxide as the starting material. A mechanism for the catalysis by the alkali carbonate was proposed.
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